The pipe bender is a special tool used to bend the pipe diameter of 20mm or less metal pipe. Bender structure shown in Figure 9-3. When used, the metal pipe to be bent into the fixed wheel with guide groove between the fixed rod, and then use the guide groove of the movable rod to guide the pipe, with the fixed rod to fasten the pipe, the hand of the movable rod handle clockwise rotation, so that the pipe in the guide groove bending into a specific shape.
Figure 9-3 Pipe Bender
Note: The force of operation should be uniform, so that the movable handle rotates smoothly to prevent the pipe from dead bends or cracks. A pipe bending spring, as shown in Figure 9-4, can also be used.
Figure 9-4 Pipe bender spring